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I just got this baby today. Holeee Schikes! It is a bad piece of equipment! It's the biggest air-hog I own. It's pretty much a "dead short" to the compressor, aka it's like just opening a 1/2" air hose wide-open, no restriction. It brought my 10HP Polar Air 35 CFM air compressor to it's knees fast!
Highly recommended!
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Reply:
Originally Posted by Oscar
I just got this baby today. Holeee Schikes! It is a bad piece of equipment! It's the biggest air-hog I own. It's pretty much a "dead short" to the compressor, aka it's like just opening a 1/2" air hose wide-open, no restriction. It brought my 10HP Polar Air 35 CFM air compressor to it's knees fast!
Highly recommended!
Reply:WOW! That is a piece of artwork!!! First, on something like that I would have a whip so the connection isnt rigid for such length. I have those same Milton connectors on my 1/2" air hoses too. Next, I have a cheapo air grinder I used to run off my tow behind diesel compressor, for smoothing out concrete when needed. I could spray water without worry. But I wouldn't think to use one for metal fab, over electric. Why did you get this one?Also, if you don't mind, where did you purchase and how much?Last edited by Stick-man; 01-17-2021 at 12:22 AM."Where's Stick man????????" - 7A749"SHHHHHH!! I sent him over to snag that MIC-4 while tbone wasn't looking!
" - duaneb55"I have bought a few of Tbone's things unlike Stick-Man who helps himself" - TozziWelding"Stick-man"
Reply:
Originally Posted by Stick-man
WOW! That is a piece of artwork!!! First, on something like that I would have a whip so the connection isnt rigid for such length. I have those same Milton connectors on my 1/2" air hoses too. Next, I have a cheapo air grinder I used to run off my tow behind diesel compressor, for smoothing out concrete when needed. I could spray water without worry. But I wouldn't think to use one for metal fab, over electric. Why did you get this one?
Reply:Did you look at the CP grinders? like the 3650 or 3850.... they got a bit more rated power than the 28824 3M
but then again they would probably suck the life right outta your polar at 69CFM
Reply:
Originally Posted by ronsii
Did you look at the CP grinders? like the 3650 or 3850.... they got a bit more rated power than the 28824 3M
but then again they would probably suck the life right outta your polar at 69CFM
Reply:Wow. That's a beauty. Stickman beat me to the "whip hose". Sent from my iPhone using Tapatalk:
Reply:I wonder how it would compare to the lesser brands if you had to throttle it back for a 3HP compressor? Do you think it would still have the advantage, or would that just decrease the performance to the other brands? I had a Blue Point for years that I liked, but when I had to get it rebuilt by SnapOn it basically came back as a gutless air hog. Wish I'd put the money into a new one now. I think they charged me $350 for the rebuild. I need to take it apart some day and see what's going on. Either there is excess wear on the housing, or maybe it's something simple like stuck impellers that are too tight.250 amp Miller DialArc AC/DC StickF-225 amp Forney AC Stick230 amp Sears AC StickLincoln 180C MIGVictor Medalist 350 O/ACut 50 PlasmaLes
Reply:Not nearly as pretty as Oscar's but here's my old Nitto Kohki. Probably only around 1.1 HP.
Sent from my iPhone using Tapatalk:
Reply:I couldn't find his on Amazon.Ca.... closest I found was a 1 HP extended body version for $470 Cdn. https://www.amazon.ca/3M-Grinder-Ext...tionAndDetails250 amp Miller DialArc AC/DC StickF-225 amp Forney AC Stick230 amp Sears AC StickLincoln 180C MIGVictor Medalist 350 O/ACut 50 PlasmaLes
Reply:
Originally Posted by whtbaron
I couldn't find his on Amazon.Ca.... closest I found was a 1 HP extended body version for $470 Cdn. https://www.amazon.ca/3M-Grinder-Ext...tionAndDetails
Reply:Yep, they do .... and that puts me just shy of $700 Cdn.250 amp Miller DialArc AC/DC StickF-225 amp Forney AC Stick230 amp Sears AC StickLincoln 180C MIGVictor Medalist 350 O/ACut 50 PlasmaLes
Reply:
Originally Posted by whtbaron
Yep, they do .... and that puts me just shy of $700 Cdn.
Reply:i like air tools but never really understood why the fanfare. noisy,needs compressor so even more noise,air hose gets in the way,not efficient and they stall more brutally than electrics.understand out in the field where no electricity is available but in a shop? idk!
Reply:
Originally Posted by whtbaron
Yep, they do .... and that puts me just shy of $700 Cdn.
Reply:
Originally Posted by filetobeef
i like air tools but never really understood why the fanfare. noisy,needs compressor so even more noise,air hose gets in the way,not efficient and they stall more brutally than electrics.understand out in the field where no electricity is available but in a shop? idk!
Reply:
Originally Posted by ronsii
They're great if you have big air.... you can't burn them up by stalling or overusing the motor
you can use then while water is draining all over you from a tank you're working on without worrying about getting fried
you can drive on the air hoses without worrying about shorting them or arcing then to something
you can use then under a cat with dirt flying all over the place without dirtying up the motor and ruining it
air has lots of plusses.... has some downsides too.... IF you're not set up for it
Reply:
Originally Posted by Lis2323
I was gonna reply but you beat me to it. (plus you had a half dozen points I hadn’t thought of ). LOL
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Reply:
Originally Posted by whtbaron
I wonder how it would compare to the lesser brands if you had to throttle it back for a 3HP compressor? Do you think it would still have the advantage, or would that just decrease the performance to the other brands? I had a Blue Point for years that I liked, but when I had to get it rebuilt by SnapOn it basically came back as a gutless air hog. Wish I'd put the money into a new one now. I think they charged me $350 for the rebuild. I need to take it apart some day and see what's going on. Either there is excess wear on the housing, or maybe it's something simple like stuck impellers that are too tight.
Reply:Probably not where I'd go anyway... for the money your Optrel hood was a lot more tempting. I have the 9" corded DeWalt for big jobs and I don't use it much. You did shame me into checking out my Blue Point though. Sadly it doesn't look like there's going to be an easy solution. The vanes all seem to be free and working as intended, and any attempts to re-align the ports didn't seem to make any difference. It really should have went straight back to SnapOn when I had it rebuilt, but I'm about 6 yrs late for that now. I did check out the big CP grinder in my GS-2 catalogue and it's coming in at $600 Cdn. so not a lot cheaper.250 amp Miller DialArc AC/DC StickF-225 amp Forney AC Stick230 amp Sears AC StickLincoln 180C MIGVictor Medalist 350 O/ACut 50 PlasmaLes
Reply:
Originally Posted by filetobeef
i like air tools but never really understood why the fanfare. noisy,needs compressor so even more noise,air hose gets in the way,not efficient and they stall more brutally than electrics.understand out in the field where no electricity is available but in a shop? idk!
Reply:
Originally Posted by Oscar
It's all about the airflow. It would bring a 3HP compressor to it's knees pretty much instantly, unless said 3HP compressor is hooked up to a VERY large tank AND has time to adequately recover. Imagine hooking up a 1/2" or 3/4" air hose to said 3HP compressor and then using a ball-valve to open it out into the atmosphere with no restriction. How long until the pressure falls below say 80psi? I bet it would be pretty darn fast!
that's what this grinder does, essentially. So technically the performance of the 3M would not decrease, for the few seconds it would have adequate air supply. It's like getting into the ring with Mike Tyson (in his prime). Sure you could last 30 seconds in the ring with Iron Mike if you run around, but when he does catch you.....you goin' down sucka!
Reply:I have rear exhaust...........HOW COME IT DOESN'T KEEP ME COOL???????????????????????????????
Reply:
Originally Posted by farmersammm
I have rear exhaust...........HOW COME IT DOESN'T KEEP ME COOL???????????????????????????????
Reply:
Originally Posted by whtbaron
I'd still be curious to see how it would perform if you restricted the air flow to the point that the compressor could keep up. I suspect you might still have a superior grinder than the one built to run at those CFM's. but nowhere near the HP you have now. I was looking at my discs and they are only rated for 8500 so my discs wouldn't even work at your 12,000 rpm. Think I saw somewhere where they recommended a specific 3-M disc.I'd be very surprised if you got close to 12,000 with any kind of load on it... but you never know??? Hey Oscar.. you got one of those optical tachs??? you know the cheapies... 10-15 bux I think I paid for my last one...
I use em on small engines, drones, etc
would be curious just how that 3m performs with some air data too
One of these..
Last edited by ronsii; 01-17-2021 at 10:06 PM.
Reply:Oh it will bog with added pressure, just like any air tool. 12,000 RPMs is the free-spinning speed I'm sure. I don't disagree with you there.
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Reply:
Originally Posted by Oscar
Oh it will bog with added pressure, just like any air tool. 12,000 RPMs is the free-spinning speed I'm sure. I don't disagree with you there.
Reply:
Originally Posted by ronsii
Oh
Shoot!! I didn't mean to stop you from posting
And.. they're also handy for keeping your hands cool when it's hot out
and the rest of you if it's got a rear exhaust
Reply:
Originally Posted by Oscar
I just got this baby today. Holeee Schikes! It is a bad piece of equipment! It's the biggest air-hog I own. It's pretty much a "dead short" to the compressor, aka it's like just opening a 1/2" air hose wide-open, no restriction. It brought my 10HP Polar Air 35 CFM air compressor to it's knees fast!
Highly recommended!
Reply:
Originally Posted by Oscar
Technically it should still work, but I suspect that if throttled-down it won't spin at 12,000 RPMs, which is what 4.5" discs/wheels should be ran at. So it might even be less effective than a less powerful grinder that is running 11,000-12,000 RPMs. And yes 3M's Cubitron II's excel in any grinder. You should try them. They're out of this world.So you have 4.5" discs rated at only 8,500 RPMs??
Reply:
Originally Posted by whtbaron
I wonder how it would compare to the lesser brands if you had to throttle it back for a 3HP compressor? Do you think it would still have the advantage, or would that just decrease the performance to the other brands? I had a Blue Point for years that I liked, but when I had to get it rebuilt by SnapOn it basically came back as a gutless air hog. Wish I'd put the money into a new one now. I think they charged me $350 for the rebuild. I need to take it apart some day and see what's going on. Either there is excess wear on the housing, or maybe it's something simple like stuck impellers that are too tight.
Reply:
Originally Posted by filetobeef
i like air tools but never really understood why the fanfare. noisy,needs compressor so even more noise,air hose gets in the way,not efficient and they stall more brutally than electrics.understand out in the field where no electricity is available but in a shop? idk!
Reply:If you have the air, this is what you need for heavy duty grinding.https://www.intlairtool.com/cleco-40...-hp-6-000-rpm/
Reply:
Originally Posted by bakodiver
See if you can get a replacement set of vanes for your grinder. While stuck vanes is the most common failure, worn ends, or too loose in the pocket will also affect performance. Also most have a centrifugal governor valve seat that may be stuck partially closed. I have a bunch of air grinders that I take into salt water, I have to disassemble and lubricate after every job.
Reply:
Originally Posted by Welder Dave
If you have the air, this is what you need for heavy duty grinding.https://www.intlairtool.com/cleco-40...-hp-6-000-rpm/
Reply:
Originally Posted by whtbaron
But you're back to a 12 lb grinder that only spins at 6,000 rpm... not much advantage over my 7/9" DeWalt.
Reply:
Originally Posted by William McCormick
Congratulations, nice tool. Remember to put air tool oil in it and get an automatic draining water filter if you do not have one already. Sincerely, William McCormick
Reply:
Originally Posted by Oscar
What's air tool oil??
Reply:
Originally Posted by Oscar
Yeah, just looking at the size/quantity of those air exit holes of that Cleco grinder screams "I want 120 CFM!!"
Reply:
Originally Posted by whtbaron
It hasn't been used much since the Snap On boys rebuilt it, so I would assume the vanes are new. I must say it looked different than I was expecting. The grinder itself is pushing 45 yrs old, so chances are I've simply worn out the body the vanes run in. I should have got a new one instead of rebuilding... I think it would have been $500 then compared to the $350 I wasted on a bad rebuild. Not sure what they're worth now, but probably more than I'd pay. For the limited amount I use it, it will likely get replaced by a cheaper brand. Most of my grinding now gets done by the 4.5 electrics anyway, and I do have the 7/9" corded as well as a 20 volt 4.5. I haven't run short of grinders yet, but there are times I would prefer to be using the air.Where is the centrifugal governor valve? I didn't completely disassemble, but I didn't see anything like that.
Reply:
Originally Posted by Lis2323
Youll want to add a drop or two into the air inlet each time you use. If you plan to use a dedicated outlet(s)/branch for air tools then you may consider installing an automatic oiler. Just dont hook up your paint pot to it. LOL.
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Reply:Yeah.... I heard you laughing the first time...250 amp Miller DialArc AC/DC StickF-225 amp Forney AC Stick230 amp Sears AC StickLincoln 180C MIGVictor Medalist 350 O/ACut 50 PlasmaLes
Reply:
Originally Posted by bakodiver
Usually just downstream of the trigger, on the end of the rotor shaft. Stuck governor valve doesn't really match your symptoms, as it wouldn't use so much air. BTW I lived in Manitoba as a child, you have my sympathy.
Reply:
Originally Posted by Oscar
Hook, line, and sinker!! Lmao
Reply:
Originally Posted by whtbaron
But you're back to a 12 lb grinder that only spins at 6,000 rpm... not much advantage over my 7/9" DeWalt.
Reply:
Originally Posted by Welder Dave
If you have the air, this is what you need for heavy duty grinding.https://www.intlairtool.com/cleco-40...-hp-6-000-rpm/
Reply:
Originally Posted by whtbaron
But you're back to a 12 lb grinder that only spins at 6,000 rpm... not much advantage over my 7/9" DeWalt.
Reply:
Originally Posted by Oscar
What's air tool oil??
Reply:As promised, some pics of the sick Blue Point that is letting too much air pass through. Assuming the vanes are fairly new (which may be a bad assumption to make) my thought is wear on that inner barrel where they run. A governor was mentioned earlier, but I don't see anything between the trigger valve and the round inlets into the barrel. I'm wondering if it's possible the barrel isn't sealing in the outer handle as well. I know it looks like a lot of crud in there, but it was more like staining. It did get oiled once in a while. I wish I had taken more pics of the inner workings, and the orientation of the barrel in the handle as it came apart. I keep wondering if it's simply being reassembled wrong for the air ducts to line up.
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发表于 2021-9-1 23:14:08